Workshop Manuals Factory service & repair Aston Martin
01 Introduction and safety02 Electrics03 Body and trim04 Air conditioning05 Diagnostic system (PDU)
Aston Martin DB7 Factory Workshop Manual Volume 2: Electrics, Body and Air Conditioning (1994-1998)05 · Diagnostic system (PDU)
05 · Diagnostics

Output State Control - 97 MY (page 3 of 3)

Make
Aston Martin
Model
DB7 Factory Workshop Manual Volume 2: Electrics, Body and Air Conditioning
Year
1994–1998
Section
Operating instructions
Diagnostic system (PDU)Output State Control - 97 MY · page 3 of 3
Signal Description
IACDTCYIdle Air Control Duty Cycle (% open)
IATIntake Air Temperature - °C or raw input counts
IAT STATAir Temperature - Temperature sensor failure
IAT-VIntake Air Temperature - Volts or raw counts
IGNDesired Ignition Timing - ° BTDC
INDSInput from manual lever position sensor (counts)
IPWAInjector Pulse Width in mS- Bank A (Cylinders 1-3)
IPWBInjector Pulse Width in mS- Bank B (Cylinders 4-6)
LAMSE1Current Short Term Fuel Trim 1, adjustment from stoich - (% of range)
LAMSE2Current Short Term Fuel Trim 2, adjustment from stoich - (% of range)
LFCLow Speed Fan Status
LOOPFuel Control - 1 = Open Loop, 0 = Closed Loop
MAF MAXMaximum Mass Air Flow signal during normal running
MAFRaw MAF sensor output (A/D counts)
MAF STATMass Air Flow Meter - MAF sensor failure
MILMalf. Indicator Lamp Status - 1 = Lamp On
Mis HICumulative misfires detected by misfire test (Hi bit).
Mis LOCumulative misfires detected by misfire test (Lo bit).
Mis nc HICumulative misfires detected by a misfire test (Hi bit).
Mis nc LOCumulative misfires detected by a misfire test.
Mis1 HICumulative misfires detected by cylinder 1 misfire test (Hi bit).
Mis1 LOCumulative misfires detected by cylinder 1 misfire test (Lo bit).
Mis2 HICumulative misfires detected by cylinder 2 misfire test (Hi bit).
Mis2 LOCumulative misfires detected by cylinder 2 misfire test (Lo bit).
Mis3 HICumulative misfires detected by cylinder 3 misfire test (Hi bit).
Mis3 LOCumulative misfires detected by cylinder 3 misfire test (Lo bit).
Mis4 HICumulative misfires detected by cylinder 4 misfire test (Hi bit).
Mis4 LOCumulative misfires detected by cylinder 4 misfire test (Lo bit).
Mis5 HICumulative misfires detected by cylinder 5 misfire test (Hi bit).
Mis5 LOCumulative misfires detected by cylinder 5 misfire test (Lo bit).
Mis6 HICumulative misfires detected by cylinder 6 misfire test (Hi bit).
Mis6 LOCumulative misfires detected by cylinder 6 misfire test (Lo bit).
MISFMisfire Monitor - 1 = Currently misfiring
ODCODESTotal number of on-demand codes currently stored.
PGM CVS DCPurge Management Duty Cycle (% on)
PIPProfile Ignition Pick-Up - PIP input level
PNPPark Neutral Position Switch
R-BIAS1Rear bias trim (Bank 1, cylinders 1-3)
R-BIAS2Rear bias trim (Bank 2, cylinders 4-6)
RATCHLowest TP reading during driving
TP MAXMaximum Throttle Potentiometer signal during normal running
TP STATThrottle Position Sensor - TP sensor failure
TPThrottle Potentiometer - Volts or counts
TPR-VRaw counts from sensor
TQ-NETNet torque into the torque converter
TRIPOBDII Drive Cycle Complete (except cat monitor) - 1 = Trip completed
TRIPCNTNumber of Completed OBDII Trips
VS MAXMaximum Vehicle Speed signal during normal running
VS STATVehicle Speed Sensor mode flag
VSVehicle Speed - MPH
WACWide Open Throttle A/C Cut-Off - 1 = High (WOT Relay)

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